关于C Primer Plus 一个结构体数组的例子,该怎么处理

关于C Primer Plus 一个结构体数组的例子

C/C++ code

#include<stdio.h>
#define MAXTITLE 2    //标题
#define MAXAUTL  2  //作者
#define MAXBKS   2 //最多可以容纳图书册数

struct book   //建立book模板
{
   char title[MAXTITLE];
   char author[MAXAUTL];
   float value;
};

int main(void)
{
   struct book library[MAXBKS];
   int count=0;
   int index;

   printf("please enter the books title.\n");
   printf("please [enter] at the start of aline to stop.\n");
   while(count<MAXBKS && gets(library[count].title)!=NULL && library[count].title[0]!='\0')
   {
     printf("Now enter the book author.\n");
     gets(library[count].author);

     printf("Now enter the value.\n");
     scanf("%f",&library[count++].value);

     while(getchar()!='\n')  
         continue;

     if(count<MAXBKS)
        printf("Enter the next title.\n");
   
   }

   if(count>0)
   {
      printf("Here is the list of your books:\n");
      for(index=0;index<count;index++)
          printf("%s  by  %s: $ %.2f \n",library[index].title,library[index].author,library[index].value);
          
   }
   else
       printf("No book? Too bad!");

  return 0;

}

它的输出是；

C/C++ code

lease enter the books title
please [enter] at the start of aline to stop

111
Now enter the book author
kkk
Now enter the value
12


Enter the next title
222
Now enter the book author
eee
Now enter the value
32

Here is the list of your books
[color=#FF0000]11kk by kk: $ 12.00              应该是；111 by kkk &12.00
22ee by ee: $ 32.00                      222 by eee &32.00[/color]

小弟没看懂我是也单步看了下，没看出来为什么。

------解决方案--------------------

C/C++ code


#include<stdio.h>
#define MAXTITLE 4    //这里
#define MAXAUTL  4  //这里
#define MAXBKS   2 //最多可以容纳图书册数

struct book   //建立book模板
{
   char title[MAXTITLE];
   char author[MAXAUTL];
   float value;
};

int main(void)
{
   struct book library[MAXBKS];
   int count=0;
   int index;

   printf("please enter the books title.\n");
   printf("please [enter] at the start of aline to stop.\n");
   while(count<MAXBKS && gets(library[count].title)!=NULL && library[count].title[0]!='\0')
   {
       library[count].title[MAXTITLE-1] = '\0';    //输出字符串得在字符数组末尾加'\0'
     printf("Now enter the book author.\n");
     gets(library[count].author);
     library[count].author[MAXAUTL-1] = '\0';
     printf("Now enter the value.\n");
     scanf("%f",&library[count++].value);

     while(getchar()!='\n')  
         continue;

     if(count<MAXBKS)
        printf("Enter the next title.\n");
   
   }

   if(count>0)
   {
      printf("Here is the list of your books:\n");
      for(index=0;index<count;index++)
          printf("%s  by  %s: $ %.2f \n",library[index].title,library[index].author,library[index].value);
          
   }
   else
       printf("No book? Too bad!");

  return 0;

}

------解决方案--------------------
#define MAXTITLE 5    //标题
#define MAXAUTL  5  //作者
试试 是不是能达到效果

------解决方案--------------------
struct book   //建立book模板
{
  char title[MAXTITLE];
  char author[MAXAUTL];
  float value;
};

title 和 author 都是拥有两个char类型变量的数组


library[count].title  和  
library[count].author 字符宽度都是2

所以只读入了两个字符


------解决方案--------------------
程序中没有检查输入字符串的最大长度是否超过结构中定义变量所能容纳的最大长度。

关于C Primer Plus 一个结构体数组的例子,该怎么处理

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